ATutor up to 2.2.4 upload.php IllegalExtensions unrestricted upload

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability was found in ATutor up to 2.2.4 (Learning Management Software). It has been classified as critical. This affects an unknown functionality of the file upload.php. The manipulation of the argument IllegalExtensions with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-434. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in ATutor through 2.2.4. It allows the user to run commands on the server with the teacher user privilege. The Upload Files section in the File Manager field contains an arbitrary file upload vulnerability via upload.php. The $IllegalExtensions value only lists lowercase (and thus .phP is a bypass), and omits .shtml and .phtml.

The bug was discovered 04/12/2019. The weakness was presented 04/22/2019 (Website). The advisory is shared at exploit-db.com. This vulnerability is uniquely identified as CVE-2019-11446 since 04/21/2019. It is possible to initiate the attack remotely. The successful exploitation needs a authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/01/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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CPE 2.3infoedit

CPE 2.2infoedit

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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2infoedit

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-434
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfoedit

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Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfoedit

04/12/2019 🔍
04/21/2019 +9 days 🔍
04/22/2019 +1 days 🔍
04/23/2019 +1 days 🔍
06/01/2020 +405 days 🔍

Sourcesinfoedit

Advisory: exploit-db.com
Status: Not defined

CVE: CVE-2019-11446 (🔍)

Entryinfoedit

Created: 04/23/2019 08:58 AM
Updated: 06/01/2020 11:40 AM
Changes: (2) vulnerability_discoverydate advisory_url
Complete: 🔍

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